Quintuple Alliance

The Quintuple Alliance was a five-state alliance of the United Kingdom, the Russian Empire, the Austrian Empire, Prussia, and France that was formed after the Congress of Aix-la-Chapelle in 1818. The alliance met at the Congress of Troppau in 1820, the Congress of Laibach in 1821, and the Congress of Verona in 1822, and the alliance undertook reactionary actions; the Austrians invaded Italy to crush liberal insurrections there, while France restored absolute rule in Spain through invasion. The alliance became defunct after Alexander I of Russia's death in 1825.